I'm not entirely sure of the above. While he is an egotist, he may have something else in mind. Possibly a new option:
4) He's trying to deflect attention from other areas, by keeping us occupied on this.
Personally, I'm interested in seeing his tax returns... not me personally, but to have them audited by a government official (not IRS, they are just concerned with taxes, someone that would be more concerned with ethics), to make sure he doesn't have any conflicts of interest being President. Also, a committee to make sure he's properly divested himself of things that could be considered a conflict of interest, or that those interests have been dealt with appropriately (something such as placed in a blind trust).